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Auto merge of #13848 - rust-lang:renovate/msrv, r=epage
chore(deps): update msrv (1 version) to v1.78 [](https://renovatebot.com) This PR contains the following updates: | Package | Update | Change | |---|---|---| | [MSRV:1](https://togithub.com/rust-lang/rust) | minor | `1.77` -> `1.78` | --- ### Release Notes <details> <summary>rust-lang/rust (MSRV:1)</summary> ### [`v1.78`](https://togithub.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1780-2024-05-02) [Compare Source](https://togithub.com/rust-lang/rust/compare/1.77.0...1.78.0) \========================== <a id="1.78.0-Language"></a> ## Language - [Stabilize `#[cfg(target_abi = ...)]`](https://togithub.com/rust-lang/rust/pull/119590/) - [Stabilize the `#[diagnostic]` namespace and `#[diagnostic::on_unimplemented]` attribute](https://togithub.com/rust-lang/rust/pull/119888/) - [Make async-fn-in-trait implementable with concrete signatures](https://togithub.com/rust-lang/rust/pull/120103/) - [Make matching on NaN a hard error, and remove the rest of `illegal_floating_point_literal_pattern`](https://togithub.com/rust-lang/rust/pull/116284/) - [static mut: allow mutable reference to arbitrary types, not just slices and arrays](https://togithub.com/rust-lang/rust/pull/117614/) - [Extend `invalid_reference_casting` to include references casting to bigger memory layout](https://togithub.com/rust-lang/rust/pull/118983/) - [Add `non_contiguous_range_endpoints` lint for singleton gaps after exclusive ranges](https://togithub.com/rust-lang/rust/pull/118879/) - [Add `wasm_c_abi` lint for use of older wasm-bindgen versions](https://togithub.com/rust-lang/rust/pull/117918/) This lint currently only works when using Cargo. - [Update `indirect_structural_match` and `pointer_structural_match` lints to match RFC](https://togithub.com/rust-lang/rust/pull/120423/) - [Make non-`PartialEq`-typed consts as patterns a hard error](https://togithub.com/rust-lang/rust/pull/120805/) - [Split `refining_impl_trait` lint into `_reachable`, `_internal` variants](https://togithub.com/rust-lang/rust/pull/121720/) - [Remove unnecessary type inference when using associated types inside of higher ranked `where`-bounds](https://togithub.com/rust-lang/rust/pull/119849) - [Weaken eager detection of cyclic types during type inference](https://togithub.com/rust-lang/rust/pull/119989) - [`trait Trait: Auto {}`: allow upcasting from `dyn Trait` to `dyn Auto`](https://togithub.com/rust-lang/rust/pull/119338) <a id="1.78.0-Compiler"></a> ## Compiler - [Made `INVALID_DOC_ATTRIBUTES` lint deny by default](https://togithub.com/rust-lang/rust/pull/111505/) - [Increase accuracy of redundant `use` checking](https://togithub.com/rust-lang/rust/pull/117772/) - [Suggest moving definition if non-found macro_rules! is defined later](https://togithub.com/rust-lang/rust/pull/121130/) - [Lower transmutes from int to pointer type as gep on null](https://togithub.com/rust-lang/rust/pull/121282/) Target changes: - [Windows tier 1 targets now require at least Windows 10](https://togithub.com/rust-lang/rust/pull/115141/) - [Enable CMPXCHG16B, SSE3, SAHF/LAHF and 128-bit Atomics in tier 1 Windows](https://togithub.com/rust-lang/rust/pull/120820/) - [Add `wasm32-wasip1` tier 2 (without host tools) target](https://togithub.com/rust-lang/rust/pull/120468/) - [Add `wasm32-wasip2` tier 3 target](https://togithub.com/rust-lang/rust/pull/119616/) - [Rename `wasm32-wasi-preview1-threads` to `wasm32-wasip1-threads`](https://togithub.com/rust-lang/rust/pull/122170/) - [Add `arm64ec-pc-windows-msvc` tier 3 target](https://togithub.com/rust-lang/rust/pull/119199/) - [Add `armv8r-none-eabihf` tier 3 target for the Cortex-R52](https://togithub.com/rust-lang/rust/pull/110482/) - [Add `loongarch64-unknown-linux-musl` tier 3 target](https://togithub.com/rust-lang/rust/pull/121832/) Refer to Rust's \[platform support page]\[platform-support-doc] for more information on Rust's tiered platform support. <a id="1.78.0-Libraries"></a> ## Libraries - [Bump Unicode to version 15.1.0, regenerate tables](https://togithub.com/rust-lang/rust/pull/120777/) - [Make align_offset, align_to well-behaved in all cases](https://togithub.com/rust-lang/rust/pull/121201/) - [PartialEq, PartialOrd: document expectations for transitive chains](https://togithub.com/rust-lang/rust/pull/115386/) - [Optimize away poison guards when std is built with panic=abort](https://togithub.com/rust-lang/rust/pull/100603/) - [Replace pthread `RwLock` with custom implementation](https://togithub.com/rust-lang/rust/pull/110211/) - [Implement unwind safety for Condvar on all platforms](https://togithub.com/rust-lang/rust/pull/121768/) - [Add ASCII fast-path for `char::is_grapheme_extended`](https://togithub.com/rust-lang/rust/pull/121138/) <a id="1.78.0-Stabilized-APIs"></a> ## Stabilized APIs - [`impl Read for &Stdin`](https://doc.rust-lang.org/stable/std/io/struct.Stdin.html#impl-Read-for-%26Stdin) - [Accept non `'static` lifetimes for several `std::error::Error` related implementations](https://togithub.com/rust-lang/rust/pull/113833/) - [Make `impl<Fd: AsFd>` impl take `?Sized`](https://togithub.com/rust-lang/rust/pull/114655/) - [`impl From<TryReserveError> for io::Error`](https://doc.rust-lang.org/stable/std/io/struct.Error.html#impl-From%3CTryReserveError%3E-for-Error) These APIs are now stable in const contexts: - [`Barrier::new()`](https://doc.rust-lang.org/stable/std/sync/struct.Barrier.html#method.new) <a id="1.78.0-Cargo"></a> ## Cargo - [Stabilize lockfile v4](https://togithub.com/rust-lang/cargo/pull/12852/) - [Respect `rust-version` when generating lockfile](https://togithub.com/rust-lang/cargo/pull/12861/) - [Control `--charset` via auto-detecting config value](https://togithub.com/rust-lang/cargo/pull/13337/) - [Support `target.<triple>.rustdocflags` officially](https://togithub.com/rust-lang/cargo/pull/13197/) - [Stabilize global cache data tracking](https://togithub.com/rust-lang/cargo/pull/13492/) <a id="1.78.0-Misc"></a> ## Misc - [rustdoc: add `--test-builder-wrapper` arg to support wrappers such as RUSTC_WRAPPER when building doctests](https://togithub.com/rust-lang/rust/pull/114651/) <a id="1.78.0-Compatibility-Notes"></a> ## Compatibility Notes - [Many unsafe precondition checks now run for user code with debug assertions enabled](https://togithub.com/rust-lang/rust/pull/120594/) This change helps users catch undefined behavior in their code, though the details of how much is checked are generally not stable. - [riscv only supports split_debuginfo=off for now](https://togithub.com/rust-lang/rust/pull/120518/) - [Consistently check bounds on hidden types of `impl Trait`](https://togithub.com/rust-lang/rust/pull/121679) - [Change equality of higher ranked types to not rely on subtyping](https://togithub.com/rust-lang/rust/pull/118247) - [When called, additionally check bounds on normalized function return type](https://togithub.com/rust-lang/rust/pull/118882) - [Expand coverage for `arithmetic_overflow` lint](https://togithub.com/rust-lang/rust/pull/119432/) <a id="1.78.0-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 18](https://togithub.com/rust-lang/rust/pull/120055/) - [Build `rustc` with 1CGU on `x86_64-pc-windows-msvc`](https://togithub.com/rust-lang/rust/pull/112267/) - [Build `rustc` with 1CGU on `x86_64-apple-darwin`](https://togithub.com/rust-lang/rust/pull/112268/) - [Introduce `run-make` V2 infrastructure, a `run_make_support` library and port over 2 tests as example](https://togithub.com/rust-lang/rust/pull/113026/) - [Windows: Implement condvar, mutex and rwlock using futex](https://togithub.com/rust-lang/rust/pull/121956/) </details> --- ### Configuration 📅 **Schedule**: Branch creation - "* * * * *" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. 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